I learned how on a Pt-111. I pry up the hook just enough and try to push it toward the rear at the same time. Maybe a litte wiggle to loosen it. Maybe a pry from underneath at the same time. After about ten trips tp the range is was loose enough to fly off by itself and I eventually ordered three of 'em.

“…democratic socialism, the great utopia of the last few generations, is not only unachievable but that to strive for it produces something utterly different – the very destruction of freedom itself. As has been aptly said: ‘What has always made the state a hell on earth has been precisely that man has tried to make it his heaven.'” F.A. Hayek